02-17-2018, 10:31 PM | #1 | |
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GPI MAX Cam/Head Results
The most powerful ls3 top end available using plastic factory style manifold!
Almost 150 hp gain over stock ls3 with only a 226 intake duration cam. The ls7 Head gives us a lot of room for milling to increase compression, and it allows us to have incredible mid to upper rpm power and rev range thanks to some amazing ports. We are developing cams specifically for this head/intake configuration. This is the alpha package, and for the max effort drag guys, we have combos available utilizing cid intake, high ram, and or solid roller applications. Expect another 40 plus hp in those applications. Last edited by Rhino79; 02-17-2018 at 10:58 PM. |
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02-18-2018, 07:41 AM | #2 |
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Fantastic results Ryan & Aaron! Looking forward to seeing how this package performs on a L99 w/VVT!
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2014 Camaro SS L99, Ashen Grey w/Black Leather - Build thread - http://www.camaro5.com/forums/showthread.php?t=491561
Mods - GPI 416 w/Custom Grind Cam, Ported Heads & Tuned by Ben, Mag Heartbeat, ZL1 Fuel Pump & DSX Aux Pump, NW 103 TB, FIC 1650's, Alky Meth, Circle D 3600 Triple Disc, RPM 5” CAI, Kooks Headers, Solo Cat Back, Viking Coil Overs & all the BMR Goodies in the rear, Zl1 3.23 Diff, DSS Axles, Gulfcoast Driveshaft, Hendrix Offset Diff Bushings, AFE Solid Subframe Bushings, 875HP/843TQ 5FDP |
02-18-2018, 08:01 AM | #3 |
Drives: 2014 1SS/1LE Join Date: Nov 2015
Location: Louisville, KY
Posts: 826
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How would a package like this be on a daily driver, one that is used for autocross and the occasional track day? Also, what about maintenance intervals and inspection requirements?
Sent from my Pixel XL using Tapatalk
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830 WHP 700 WTQ, Whipple 2.9 @ 13lbs Boost, Flex Fuel Tune by Blevins Tuning, LSA SBE, 3.5 GripTec, ATI LS3 Damper, AFR 260cc Mongoose, ARP Studs, Yella Terra Ultralites, Johnson 2110R, BTR PDS Stage 3, Melling 10355, Improved Racing Baffle, ID1050X, DSX Triple Fuel Pump, RotoFab CAI, NW 103mm TB, Stainless Works 1-7/8" LTH to 3" Speed Eng w/ X-pipe to NPP, Powermaster 9509 XS, Detroit Speed Motor Mounts, MGW, Monster LT1-S, ZL1 Calipers, DBA Rotors & Pads, Bilstein B6 Struts & Shocks, BMR 1.25" Drop Springs & Adj Rear Bar, Pegasus Solid Bushings, Z/28 Wheels, other misc parts.
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02-18-2018, 08:07 AM | #4 |
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This package will require no more maintenance than ours or any other cammed setup. We simply have developed a head/cam combo that performs at a higher level.
The rpm range is extended with this package, so autocross/roadcourse/ and drag will all reap the rewards of the rpm capability. |
02-18-2018, 09:06 AM | #5 |
Drives: 2015 Camaro 2SS Green Flash Edition Join Date: Dec 2015
Location: NW Arkansas
Posts: 200
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NICE!
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Kooks stepped headers & Solo XL Cat-back
ADM CAI w/race scoop & Rotofab w/w relo GPI VVT SS1 cam and CNC ported heads milled .30 BTR .660 springs, Straub solid bushing trunions GPI rod-mod intake with I-M heat sheild Circle D 258mm Pro single disc 3700 rpm stall converter 169F thermostat & manual fan switch Tuned by Ryno at GPI - 455 RWHP / 416 lb-ft |
02-18-2018, 06:08 PM | #6 |
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Nice package
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2010 C6 JET STREAM BLUE
BOLT ONS TO THE EXTREME, GPI 281cc HEADS, Darth_V8r SPEC CAM, FAST 102 INTAKE, CRANK SCRAPER, QUARTER MASTER 7.25" CLUTCH, RPM 3.90 STAGE II DIF, Z51 Gear Set AND E85 Best ET 10.58 @ 131.8 stock heads and stock cam 453/445 SAE 10.62@134.82 GPI 281CC Heads, SS4 Cam and X1 Intake Best 1/8 6.80@105.75 Best MPH 134.82 |
02-18-2018, 06:33 PM | #7 |
Drives: cars Join Date: May 2011
Location: Oversneeze
Posts: 4,544
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Is it a small bore LS7 head? Do you have or are you looking into road race stable cams? What kinds of valves: titanium, sodium filled, solid? I'm thinking low lash might be necessary to have road race stability plus lift numbers that would benefit from these heads or is it more about the compression ratio change?
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02-18-2018, 09:30 PM | #8 | |
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Quote:
as with any ls7 Head, the pedestals need to be milled off for shaft mounts if you want to make running a solid worth your while. (Big lift). We have hyd lobes that are very stable into the 7000s. We often run lower lift stuff on road race stuff where sustained high rpm is needed, not necessarily the last 1 percent of power. |
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02-19-2018, 09:49 AM | #9 |
old school chevy rodder
Drives: 2013 2SS/RS Manual,DM exhaust,CRT Join Date: Jul 2012
Location: Oregon
Posts: 5,587
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Yup 7 grands a good cut off, I would love to see these heads teamed up with a stroker LS and the new intake made by LOD speedworks ;as I thought they were going to make a ls7 version ????? of their new intake as they are making new tops for it I heard and I thought a ls7 version?. I would think the combination of stroker, a more aggressive cam ,the heads and that larger runner intake would all be good......especially with a radical stroker cam shaft to use even more air and fuel.... Anyway thats my dream...dream big N/A....
And have not heard anything much on the LS7 version of their intake since they initially announced on here and showed us the intake they now have in production. SO some day I may have to have those heads you've made hopefully down the line with their intake but.....may have to be airforce like I was thinking. Still though the options are so nice to have for the future to spend money and make more power N/A or even FI or juiced bigger potential ........SIGH...... damn daughters college education has me down for about 4 more years.....
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2021 Wild Cherry ZL1 A10, Sunroof, Data, Carbon, Nav, RotoFab Dry CAI, Elite x2, Borla ATK, Driveshaft shop
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02-21-2018, 08:52 PM | #10 |
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We have made pulls to 7700 rpm. As long as the valvetrain is stable, the factory ls7 manifold will go there. Of course a carb style intake like the cid would be the best for power, but very hard to package.
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02-22-2018, 06:05 AM | #11 |
GPI Sales Consultant
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Really nice setup. You guys always seem to have the drop on the competition with the absolute top performing hardware. Can't wait to see some of these hit the track!
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GPI Max Package 2.0: Brodix BR7 heads/GPI porting, MAX3 cam, ST2116LSR, BSR Max Lift rockers, LS7 LSXR with 103mm TB, Vararam OTR, Mcleod RXT, G-Force/Strange 9" IRS setup with 4.63 gear. 551whp, 11.1@124mph.
Got a question about a GPI product? Feel free to shoot me a message! |
02-22-2018, 10:52 AM | #12 |
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Thats what we strive for. I want to be at the top of the game performance/durability wise. I dont want to blow smoke with products that dont deliver. We are known for kicking ass, and that will stay the same!
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02-22-2018, 12:56 PM | #13 |
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i would love to see this with full zoot treatment on the gentlemens 1LE. Crank scraper, Electric water pump, short belt and a vacuum pump on some chp+ I bet it would crack 570! 545 is stout with this left on the table ohhhh and at least a RPS clutch Great RND guys
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2010 C6 JET STREAM BLUE
BOLT ONS TO THE EXTREME, GPI 281cc HEADS, Darth_V8r SPEC CAM, FAST 102 INTAKE, CRANK SCRAPER, QUARTER MASTER 7.25" CLUTCH, RPM 3.90 STAGE II DIF, Z51 Gear Set AND E85 Best ET 10.58 @ 131.8 stock heads and stock cam 453/445 SAE 10.62@134.82 GPI 281CC Heads, SS4 Cam and X1 Intake Best 1/8 6.80@105.75 Best MPH 134.82 |
02-22-2018, 01:25 PM | #14 |
Drives: 2010 Camaro SS/RS Join Date: Mar 2014
Location: somewhere in MD
Posts: 4,883
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are these actual ls7 heads or did you guys design your own? either way those are awesome gains!
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2010 2SS/RS
Z/28 intake, NW, FAST 102, speed engineering LT's, some exhaust, ATI -10% pulley, GM flex fuel injectors, DSX flex fuel sensor, MGW shifter, HP Tuners, some suspension work, stickers and a little weight loss. 12.63 @113.53 |
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